石灰质土壤柑桔叶片MgFeZn与叶绿素含量的关系分析  

STUDIES ON THE CORRELATIONS AMONG FOLIAR NUTRATION OF Mg Fe Zn AND CHLOROPHYLL CONTENT IN CITRUS CULTIVATED IN CALCAREOUS PURPLE SOIL

作　　者：尹克林[1,2] 李银国[1,2] 王成秋[1,2] 王树良[1,2] 

机构地区：[1]西南农业大学园艺系 [2]中国农业科学院柑桔研究所

出　　处：《西南农业大学学报（自然科学版）》1998年第4期283-287,共5页Journal of Southwest Agricultural University

基　　金：国家自然科学基金

摘　　要：】Ｎ，Ｐ，Ｋ，Ｍｇ，Ｚｎ肥配合施用，与碱性紫色土上柑桔叶片叶绿素含量的主成分分析表明，叶Ｍｇ，Ｚｎ含量与叶绿素呈正相关，叶Ｆｅ与叶绿素的相关性差异大，叶矿质营养间的相关性则随年份不同而异。逐步回归模型分析表明，单独施用Ｎ，Ｐ，Ｋ，Ｍｇ肥对提高叶绿素含量的作用不显著，Ｚｎ肥适量配合其它元素可提高柑桔叶绿素含量，以不施或少施Ｐ肥（Ｐ２Ｏ５～０．２５ｋｇ／株）和施半量或低量的Ｎ，Ｋ，Ｍｇ，Ｚｎ肥可获得最大叶绿素含量。Chlorosis due to deficiencies in Fe and Zn is common for Citrus planted on limestone purple soil in the Southwest of China. The variation of foliar nutrients in Mg, Fe, Zn was induced by soil fertilization combined with urea, calcium superphshate, potash, magnesium sulfate, and zinc sulfate in order to analyze the correlation between mineral nutrients and chlorophyll. Component analysis has displayed that Mg and Zn in leaf correlate positively with chlorophyll content. In contrast, Fe showed a variable correlation with the latter. Through the stepwise multiple regression analysis, there was not any significant correlation among the N, P, K, Mg fertilizers and the chlorophyll. The increase in foliar chlorophyll could result principally from the application of Zn combined with the others in proper quantity. The highest contents in chlorophyll have been obtained from both the combinations of half or less portion of N, K, Mg, Zn and few or no P (0～0.25 kg P 2O 5 per tree).

关 键 词：石灰质土壤 柑桔属 镁 铁 锌 叶绿素 配方施肥 

分 类 号：S155.31[农业科学—土壤学] S666.062[农业科学—农业基础科学]